One of the great advantages of using Wings is its Context Sensitive Menus. With all the modeling tools specific to the current Selection mode just a mouse click away Wings has both a powerful and efficient work flow . Right-clicking anywhere in the Geometry Window will bring up a menu with all the tools and commands available for the current selection. Often this menu is referred to as the Right-Click Menu. There are six different selection modes and each has its own unique Right-Click Menu: No Current Selection, Vertex, Edge, Face, Object/Body and Lights. Right-clicking with any element of geometry selected will bring up the appropriate menu for the mode you are in. If nothing is selected right- clicking brings up the No Selection also referred to as the Primitives menu.

In Wings3D the menu functions displayed are only those available to the current selection mode employed.
After all, why display greyed out menu items that are unavailable to the user?
Also note that a lot of operations with the same names should perform a similar operation in their respective modes. It is possible for the behavior of a given operation to vary (sometimes substantially) depending on what mode it occurs in.

Eg Using Face | Rotate will cause all selected, isolated faces to rotate about their own individual (local) axis, but converting the same selection to Vert mode will result in all selected verts rotating around a single common axis.